Biopsychology - Neurons & Synaptic Transmission Flashcards
Explain the process of synaptic transmission (6 marks)
Possible content
- Electrical impulse travels down the pre-synaptic neuron to the terminal button and reaches the vesicles
- it stimulates the release of neurotransmitters from the vesicles
- these bind to the receptors depending on their shape, like a lock and key
- receptors are then stimulated
- the electrical impulse is then reformed in the post-synaptic neuron
- All neurotransmitters are re-uptaken by the re-uptaker
outline how excitation and inhibition are involved in synaptic transmission
neurotransmitters can be excitatory or inhibitory
> excitatory - increase the charge of the post synaptic neuron e.g. adrenaline
> inhibitory - decrease the charge of the post synaptic neuron e.g. serotonin
neurotransmitters bind to receptors and an action potential reforms based on pre-synaptic inputs
> more excitatory, more positive, more likely to continue an action potential
> more inhibitory, more negative, less likely to continue an action potential
this all occurs after synaptic transmission takes place
the adrenal gland is part of the endocrine system that produces adrenaline to help the body prepare for fight or flight response
using an example of a gland and hormone, outline the function of the endocrine system. do not use the adrenal gland/adrenaline as your example (4 marks)
ao1 = 4
1 mark for correct function of the endocrine system
to secrete the hormones which are required to regulate many bodily functions
to provide a chemical system of communication via the bloodstream
1 mark for the name of a hormone
1 mark for the gland that the above named hormone is secreted from
1 mark for elaboration of how the function occurs; such as via the release of the required amount of a specific hormone to promote appropriate growth or metabolism or reproduction
ao1 fight or flight 16 marker
The fight or flight reponse is caused by an acute stress trigger
